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Code Pull Requests Activity

replace CacheDb in TelemetryTracker

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This commit is contained in:
ngfrolov 2022-11-18 15:07:27 +05:00
parent de6bbcfa72
commit 04414b3c75
3 changed files with 51 additions and 6 deletions
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44
AsbCloudInfrastructure/CacheExtentions.cs Normal file
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@ -0,0 +1,44 @@
using AsbCloudDb.Model;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace AsbCloudInfrastructure
{
public static class MemoryCacheExtentions
{
private static readonly TimeSpan CacheOlescence = TimeSpan.FromMinutes(5);
public static Task<IEnumerable<T>> GetOrCreateBasicAsync<T>(this IMemoryCache memoryCache, IAsbCloudDbContext dbContext, CancellationToken token)
where T : class
{
var cacheTag = typeof(T).FullName;
var cache = memoryCache.GetOrCreateAsync(cacheTag, async (cacheEntry) => {
cacheEntry.AbsoluteExpirationRelativeToNow = CacheOlescence;
cacheEntry.SlidingExpiration = CacheOlescence;
var entities = await dbContext.Set<T>().ToArrayAsync(token);
return entities.AsEnumerable();
});
return cache;
}
public static IEnumerable<T> GetOrCreateBasic<T>(this IMemoryCache memoryCache, IAsbCloudDbContext dbContext)
where T : class
{
var cacheTag = typeof(T).FullName;
var cache = memoryCache.GetOrCreate(cacheTag, cacheEntry => {
cacheEntry.AbsoluteExpirationRelativeToNow = CacheOlescence;
cacheEntry.SlidingExpiration = CacheOlescence;
var entities = dbContext.Set<T>().ToArray();
return entities.AsEnumerable();
});
return cache;
}
}
}

8
AsbCloudInfrastructure/Services/SAUB/TelemetryService.cs
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@ -17,7 +17,7 @@ namespace AsbCloudInfrastructure.Services.SAUB
#nullable enable
public class TelemetryService : ITelemetryService
{
private const string telemetryCacheTag = "telemetryCache";
private const string CacheTag = "TelemetryCache";
private static readonly TimeSpan telemetryCacheObsolescence = TimeSpan.FromMinutes(5);
private readonly IAsbCloudDbContext db;
@ -39,15 +39,15 @@ namespace AsbCloudInfrastructure.Services.SAUB
private IEnumerable<Telemetry> GetTelemetryCache()
{
var cache = db.Telemetries
var cache = db.Set<Telemetry>()
.Include(t => t.Well)
.FromCache(telemetryCacheTag, telemetryCacheObsolescence);
.FromCache(CacheTag, telemetryCacheObsolescence);
return cache;
}
private void DropTelemetryCache()
{
db.Telemetries.DropCache(telemetryCacheTag);
db.Telemetries.DropCache(CacheTag);
}
public DateTime GetLastTelemetryDate(int idTelemetry)

5
AsbCloudInfrastructure/Services/SAUB/TelemetryTracker.cs
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@ -3,6 +3,7 @@ using AsbCloudApp.Services;
using AsbCloudDb.Model;
using AsbCloudInfrastructure.Services.Cache;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Concurrent;
@ -39,14 +40,14 @@ namespace AsbCloudInfrastructure.Services.SAUB
private readonly ConcurrentDictionary<string, TrackerStat> telemetriesStats;
public TelemetryTracker(CacheDb cacheDb, IConfiguration configuration)
public TelemetryTracker(IConfiguration configuration, IMemoryCache memoryCache)
{
var contextOptions = new DbContextOptionsBuilder<AsbCloudDbContext>()
.UseNpgsql(configuration.GetConnectionString("DefaultConnection"))
.Options;
var db = new AsbCloudDbContext(contextOptions);
var cacheTelemetry = cacheDb.GetCachedTable<Telemetry>(db);
var cacheTelemetry = memoryCache.GetOrCreateBasic<Telemetry>(db);
var keyValuePairs = new Dictionary<string, TrackerStat>(cacheTelemetry.Count());
foreach (var telemetry in cacheTelemetry)
{